Question

One example each of a poor conductor of heat and comparatively a good conductor of electricity respectively are
A) Aluminium and Silver
B) Silver and Copper
C) Lead and Graphite
D) Aluminium and Graphite

Answer 1

Answer:

C.lead and graphite

Lead is a poor conductor while graphite is a better conductor.

Answer 2

The correct answer:-

• Poor conductor of heat - Lead
• Good conductor of heat - Graphite

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Explanation:-

❒ Let's see the options:

• Aluminum is a good conductor of electricity, so first option is incorrect.
• Silver is also a good conductor of electricity, infact it is the best conductor of electricity. Also, Copper is a ver good conducter of electricity. So, second option is incorrect.
• Although, being a metal lead is a bad conductor of electricity as compared to non-metal Graphite. So, Third option is Correct.
• Aluminum and Graphite, both are good conductor of electricity. So, fourth option is incorrect.

Explore more !!

Based upon the physical and chemical properties, the metals and non metals are classified. But, also there many exceptions in those properties of metals and non-metals. Like:

• Graphite is a good conductor of heat and electricity.
• Sodium is a soft metal and can be cut with knife.
• Mercury is a liquid metal.
• Iodine is a lustrous non-metal.
• Hydrogen can from cation and anion.
• Lead is a poor conductor of heat and electricity.

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